scholarly journals Relative genomic impacts of translocation history, hatchery practices, and farm selection in Pacific oyster Crassostrea gigas throughout the Northern Hemisphere

2020 ◽  
Vol 13 (6) ◽  
pp. 1380-1399 ◽  
Author(s):  
Ben J. G. Sutherland ◽  
Claire Rycroft ◽  
Anne‐Laure Ferchaud ◽  
Rob Saunders ◽  
Li Li ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
Crassostrea Gigas ◽  
Pacific Oyster

scholarly journals Relative genomic impacts of translocation history, hatchery practices, and farm selection in Pacific oyster Crassostrea gigas throughout the Northern Hemisphere

2019 ◽  
Author(s):  
Ben J. G. Sutherland ◽  
Claire Rycroft ◽  
Anne-Laure Ferchaud ◽  
Rob Saunders ◽  
Li Li ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Past Century ◽  
Chinese Populations ◽  
Introduced Populations ◽  
Oyster Aquaculture ◽  
Outlier Loci ◽  
Polymorphism Rate ◽  
Non Local

ABSTRACTPacific oyster Crassostrea gigas, endemic to coastal Asia, has been translocated globally throughout the past century, resulting in self-sustaining introduced populations (naturalized). Oyster aquaculture industries in many parts of the world depend on commercially available seed (hatchery-farmed) or naturalized/wild oysters to move onto a farm (naturalized-farmed). It is therefore important to understand genetic variation among populations and farm types. Here we genotype naturalized/wild populations from France, Japan, China, and most extensively in coastal British Columbia, Canada. We also genotype cultured populations from throughout the Northern Hemisphere to compare with naturalized populations. In total, 16,942 markers were identified using double-digest RAD-sequencing in 182 naturalized, 112 hatchery-farmed, and 72 naturalized-farmed oysters (n = 366). Consistent with previous studies, very low genetic differentiation was observed around Vancouver Island (mean FST = 0.0019), and low differentiation between countries in the Japan-Canada-France historical translocation lineage (France-Canada FST = 0.0024; Japan-Canada FST = 0.0060). Chinese populations were more differentiated (China-Japan FST = 0.0241). Hatchery-propagated populations had higher inter-individual relatedness suggesting family structure. Within-population inbreeding was not detected on farms, but nucleotide diversity and polymorphism rate was lower in one farm population. Moving oysters from nature onto farms did not result in strong within-generation selection. Private alleles at substantial frequency were identified in several hatchery populations grown in BC, suggesting non-local origins. Tests of selection identified outlier loci consistent with selective differences associated with domestication, in some cases consistently identified in multiple farms. Top outlier candidates were nearby genes involved in calcium signaling and calmodulin activity. Implications of potential introgression from hatchery-farmed oysters depends on whether naturalized populations are valued as a locally-adapted resource or as an introduced, invasive species. Given the value of the industry in BC and the challenges the industry faces (e.g., climate change, crop losses, biotic stressors), this remains an important question.

Effects of Environmental Factors and Husbandry Practices on Summer Mortality Events in the Cultivated Pacific Oyster Crassostrea gigas in the North of Ireland

2020 ◽  
Vol 39 (1) ◽  
pp. 13
Author(s):  
Elizabeth C. Ashton ◽  
Simon Guist ◽  
Dai Roberts ◽  
Julia D. Sigwart
Keyword(s):  
Environmental Factors ◽  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
The North ◽  
Summer Mortality ◽  
Husbandry Practices

Phylogenetic analysis of tyrosinase gene family in the Pacific oyster (Crassostrea gigas Thunberg)

2014 ◽  
Vol 36 (2) ◽  
pp. 135-144
Author(s):  
Yu Xue ◽  
Yu Hong ◽  
Kong Lingfeng ◽  
Li Qi
Keyword(s):  
Phylogenetic Analysis ◽  
Gene Family ◽  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Tyrosinase Gene ◽  
The Pacific

scholarly journals Protein kinase-like ER kinase (PERK) regulates autophagy of hemocytes in antiviral immunity of Pacific oyster Crassostrea gigas

2020 ◽  
Vol 1 ◽  
pp. 100002
Author(s):  
Shujing Liu ◽  
Weilin Wang ◽  
Yu Liu ◽  
Wanqing Cao ◽  
Pei Yuan ◽  
...  
Keyword(s):  
Protein Kinase ◽  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Antiviral Immunity

scholarly journals Subchronic exposure to high-density polyethylene microplastics alone or in combination with chlortoluron significantly affected valve activity and daily growth of the Pacific oyster, Crassostrea gigas

2021 ◽  
pp. 105880
Author(s):  
Arno Bringer ◽  
Hélène Thomas ◽  
Emmanuel Dubillot ◽  
Stéphane Le Floch ◽  
Justine Receveur ◽  
...  
Keyword(s):  
Crassostrea Gigas ◽  
High Density Polyethylene ◽  
Pacific Oyster ◽  
High Density ◽  
Daily Growth ◽  
Subchronic Exposure ◽  
The Pacific

Combined effects of pollutants and salinity on embryo-larval development of the Pacific oyster, Crassostrea gigas

2016 ◽  
Vol 113 ◽  
pp. 31-38 ◽  
Author(s):  
Perrine Gamain ◽  
Patrice Gonzalez ◽  
Jérôme Cachot ◽  
Patrick Pardon ◽  
Nathalie Tapie ◽  
...  
Keyword(s):  
Larval Development ◽  
Crassostrea Gigas ◽  
Pacific Oyster ◽  
Combined Effects ◽  
The Pacific
Sign in / Sign up

Export Citation Format

Share Document